748424287257 has 4 divisors (see below), whose sum is σ = 997899049680. Its totient is φ = 498949524836.

The previous prime is 748424287231. The next prime is 748424287267. The reversal of 748424287257 is 752782424847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 748424287257 - 2¹¹ = 748424285209 is a prime.

It is a super-2 number, since 2×748424287257² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 748424287257.

It is not an unprimeable number, because it can be changed into a prime (748424287267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124737381207 + ... + 124737381212.

It is an arithmetic number, because the mean of its divisors is an integer number (249474762420).

Almost surely, 2^748424287257 is an apocalyptic number.

It is an amenable number.

748424287257 is a deficient number, since it is larger than the sum of its proper divisors (249474762423).

748424287257 is a wasteful number, since it uses less digits than its factorization.

748424287257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249474762422.

The product of its digits is 56197120, while the sum is 60.

The spelling of 748424287257 in words is "seven hundred forty-eight billion, four hundred twenty-four million, two hundred eighty-seven thousand, two hundred fifty-seven".